Xbooru - 2010s 2018 2boys 2d 2d (artwork) animated skeleton bed bedroom blue blush blue tongue blush bottom sans brother brother/brother brother and brother brothers chinese text clothed comic digital media (artwork) duo ectotongue edit edited fontcest gay incest indoors interlocked fingers intertwined fingers long image making out male male/male male only monochrome monster on bed orange blush orange tongue papyrus papyrus (undertale) papysans saliva trail sans sans (undertale) seme papyrus skeleton tall image text text bubble third-party edit top papyrus uke sans undead undertale undertale (series) veah-3sin video games yaoi